DESIGN:A randomized controlled single blind study.
设计:采用随机对照单盲实验研究。
Methods: Randomized double blind study was employed.
方法:随机双盲对照临床研究。
Study Design. Prospective, randomized, double-blind study.
研究设计:前瞻性、随机化、双盲研究。
One thing to know methodologically is the person giving a choice is blind to the study.
研究方法上需要强调的一点是,主试对于实验来说是盲性的
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